动力锂电池组液冷散热分析及优化  

Analysis and optimization of liquid cooling heat dissipation of power lithium battery pack

作　　者：邱翔 陈诚 李家骅 徐文泰 QIU Xiang;CHEN Cheng;LI Jia-hua;XU Wen-tai(College of Science,Shanghai Institute of Technology,Shanghai 201418,China;School of Mechanical Engineering,Shanghai Institute of Technology,Shanghai 201418,China;College of Urban Construction and Safety Engineering,Shanghai Institute of Technology,Shanghai 201418,China)

机构地区：[1]上海应用技术大学理学院,上海201418 [2]上海应用技术大学机械工程学院,上海201418 [3]上海应用技术大学城市建设与安全工程学院,上海201418

出　　处：《电源技术》2020年第4期501-504,共4页Chinese Journal of Power Sources

基　　金：国家自然科学基金面上基金(11572203);国家自然科学基金项目(51604174);上海市教育委员会和上海市教育发展基金会“曙光计划”(18SG53)。

摘　　要：为解决动力锂电池组散热问题,建立三维生热与传热模型进行数值计算。在1 C、2 C、3 C放电倍率下,计算结果与实验数据进行了对比,表明了电池仿真模型的准确性与适用性。再以3 C放电倍率为基础,进一步数值分析电池散热系统的传热及直接液冷的冷却;为提高冷却效率,将原平滑壁面改为肋条结构,数值计算结果表明,从无肋条到肋条高度为10 mm,电池单体的最高温度降低了13.1℃,降低30%;单体的最大温度降低了12.7℃,降低74.3%;电池间的最大温差降低了13.1℃,降低了72.8%,有效地提升了电池温度的均匀性,使电池组工作的温度控制在合理的范围之内。In order to solve the heat dissipation problem of power lithium batteries,a three dimensional heat generation and heat transfer model was established for numerical calculation.At 1 C,2 C and 3 C discharge rates,the calculated results were compared with the experimental data,indicating the accuracy and applicability of the battery simulation model.On the basis of 3 C discharge ratio,the heat transfer and direct liquid cooling of the battery cooling system were analyzed numerically.In order to improve the cooling efficiency,the original smooth wall surface was changed to rib structure.The numerical calculation results show that the maximum monomer temperature of the battery decreases by 13.1℃and 30%from the height of rib to the height of rib from no rib to 10 mm.The maximum temperature of monomer decreases by 12.7℃and 74.3%.The maximum temperature difference between the batteries reduces by 13.1℃or 72.8%.The temperature uniformity of the battery is improved effectively and the working temperature of the battery is controlled within a reasonable range.

关 键 词：动力锂电池 直接液冷 肋条 

分 类 号：TM912.9[电气工程—电力电子与电力传动]